DIY V-brake Roller Chain Tensioner Completed! - Update

Here is an update on my November 2009 post on "DIY V-brake Roller Chain Tensioner Completed!". Basically, I have added a "cage" to the roller to ensure that the chain stays on. What I discovered while riding was that there is an enormous amount of pressure exerted on the roller chain and the tensioner's roller.

Whenever the wheel comes in contact with the wooden pallets or other surfaces, the chain gets shaken intensively. This causes the chain to come off the roller and slacked, which is a VERY dangerous situation.

And so, as added security, I attached a soft tin metal plate to wrap around the chain to ensure that the chain will not derail when under heavy pressure. See the following photos of the DIY roller cage.









Up to now, I have had zero incident, where the chain would come off the roller. Lets keep it that way eh? LOL. While I was taking photos of the roller cage to update this blog, I noticed that the nut (or spacer nut?) holding the gear cog in place was completely loose! Unbelievable!





I unscrewed the nut (or is it a spacer) to take a closer look at the gear cog. Believe me, I was thankful that I noticed this now instead of later. A disaster waiting to happen. I am definitely adding this to my safety checklist before riding any bike!


I removed the chain roller so that I could get at the gear cog.


With the chain out of the way, I could tighten the nut holding the gear cog in place.


I took out my "Bike Hand" bicycle tool set to look for a tool to tighten the nut.


Heck... none of the tool could be used... LOL.


In the end, this 20 years old spanner did the job!